Numerical analyses of energy balance and installation mechanisms of large-diameter tapered monopiles by impact driving

Chen, Fuquan; Liu, Liyang; Lai, Fachun; Gavin, Kenneth; Flynn, Kevin N.; Li, Yida

doi:10.1016/j.oceaneng.2022.113017

Cited by 6 publications

(1 citation statement)

References 41 publications

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“…Modelling large deformations in geotechnical engineering is a very relevant yet challenging task. Many different schemes to tackle large deformation problems in continuum mechanics exists, of which the coupled Eulerian–Lagrangian (CEL) method is a promising tool 1,6,16 . Essentially, the CEL method allows to combine Eulerian and Lagrangian representation of continua within the same model considering interaction between the two regions.…”

Section: Introductionmentioning

confidence: 99%

Hydro‐mechanically coupled CEL analyses with effective contact stresses

Staubach

2024

Num Anal Meth Geomechanics

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The coupled Eulerian–Lagrangian (CEL) method implemented in Abaqus is an established tool for modelling large deformations in numerical geomechanics. As shown in previous work, it can be extended to a hydro‐mechanically coupled scheme by exploiting the similarity of the heat balance equation to the mass balance equation of fluids. However, the distinction between effective and total contact stresses has not been possible in this approach, which hinders its application to problems with interface friction as frictional stresses are calculated based on total normal contact stress. An approach to circumvent this problem is presented in this work. Its relevance is demonstrated by the simulation of vibratory pile driving model tests in water‐saturated sand. The implementation by means of user‐subroutines is available and works for any total‐stress analysis.

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Section: Introductionmentioning

confidence: 99%

Hydro‐mechanically coupled CEL analyses with effective contact stresses

Staubach

2024

Num Anal Meth Geomechanics

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Concept on plug development in jacked open-ended piles in clay considering total stresses

Wiesenthal,

Henke

2024

Acta Geotech.

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Soil plugging in open-ended piles is likely to occur in dense sandy soils which has been the subject of numerous scientific investigations. In contrast, the plugging behaviour in clayey soils is relatively unknown. In this paper an analytical approach to determine the soil plug resistance and its development during jacking in clayey soils is proposed. The new approach was developed using numerical simulations and was validated by back-calculating a field test from the literature. A total stress approach for the numerical simulations was chosen. The values calculated with the analytical formulas and the numerical solutions as well as the measurements from field tests are in very good agreement, given the high complexity of the interactions between pile and soil. Both the plug resistance and the plug height can be calculated during the jacking process. Further research is required to refine the proposed approach for soil plug resistance evaluation, as the proposed method is believed to enhance the understanding of occurring mechanisms.

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